💨 Troubleshooting Hot Tub Air Locks: A Step‑by‑Step Guide

Few things are more frustrating than getting ready for a relaxing soak only to find your jets aren’t working. If your local hot tub store is closed or too far away, don’t worry — you can fix an airlock yourself with a few simple steps.

At Clover Home Leisure, we’re here to help you keep your spa running smoothly. This guide explains how to identify, clear, and prevent airlocks so you can get back to enjoying your hot tub.

🔍 What Is a Hot Tub Air Lock?

An air lock happens when air becomes trapped in your hot tub’s plumbing or pump system, blocking water flow. It’s common after draining and refilling your spa — and while it’s annoying, it’s easy to fix once you know how.

💧 Preventing Air Locks

The best way to avoid airlocks is by filling your hot tub correctly:

• Always fill through the filter compartment. This forces water through the plumbing and pushes air out of the lines.
• Open all diverters before filling.
• Remove the filter or standpipe carefully to avoid damage.
• Insert the garden hose as far as possible into the filter opening without forcing it.
• Secure the hose so it doesn’t slip out while filling.

This simple step helps ensure your pumps stay primed and ready.

⚙️ Step‑by‑Step: Clearing an Air Lock

1. Check the Filtration System

Start with the basics. Inspect hoses, connections, and the pump for moisture or leaks — sometimes what looks like an air lock is actually a loose fitting.

2. Identify the Problem Pump

If your hot tub has multiple pumps:

• Place your hand on each pump while pressing the jet button on the control pad.
• Feel for vibration — that’s the pump currently running.
• Repeat until you match each button to its pump.

This helps you pinpoint which pump is affected.

3. Release the Air

Once you’ve found the problem pump:

1. Turn off the power to the hot tub.
2. Use channel locks or a strap wrench to loosen the large union nut at the end of the pump (counterclockwise).
3. You’ll hear air escape, followed by a small amount of water.
4. Re‑tighten the nut, restore power, and test the jets.

If the jets still don’t work, repeat the process — sometimes it takes a few tries to fully clear the air.

⚠️ Important: Do not remove the small hose attached to the pump. It’s delicate and can break easily, especially in cold weather. Damage here may require a costly service call and is not covered under warranty.

🧠 Pro Tip: Prevention Is Easier Than Repair

Air locks are normal over time, but you can minimize them with good habits:

• Always fill through the filter compartment.
• Keep water chemistry balanced to protect seals and fittings.
• Avoid letting the water level drop below the skimmer.
• Inspect hoses and unions during seasonal maintenance.

🏁 In Summary

Air locks don’t have to ruin your soak. With a few tools and a little know‑how, you can fix the issue yourself and keep your spa running like new.

Remember — prevention is the best cure. Fill your hot tub through the filter compartment every time, and you’ll save yourself time, money, and frustration.

Need help or want a demonstration? Stop by Clover Home Leisure — we’ll test your water for free and show you exactly how to keep your spa bubbling beautifully.

Tap to Play